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Finding the Fourth Proportional to 307,792.48, 424,701 and 171,819.40

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Solution

The fourth proportional to 307,792.48, 424,701 and 171,819.40 is: 237,081.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,792.48 : 424,701 = 171,819.40 : x
  2. Step 2: Convert to fraction form
    307,792.48/424,701 = 171,819.40/x
  3. Step 3: Cross multiply
    307,792.48x = 424,701 × 171,819.40
  4. Step 4: Simplify right side
    307,792.48x = 72,971,870,999.40
  5. Step 5: Solve for x
    x = 72,971,870,999.40/307,792.48
  6. Step 6: Final answer
    x = 237,081.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.